You say you are off dairy, do you check labels for all the "other" dairy names like whey, etc? Just a thought... also any other food item you are eliminating, sometimes it takes 3-4 weeks to have an effect and sometimes it has to be 100% elimination according to the food label.

There is a yahoo group that has several VERY knowledgeable mommas on food allergies, elimination diets, MCS, etc ... the main topic of the yahoo group is elimination communication but since *most* baby symptoms of an allergy or sensitivity show through some aspect of elimination the two seem to go hand in hand.. http://groups.yahoo.com/group/eliminationcommunication/

I would join and ask about your situation there.. they can help with how to eliminate foods and what foods might be the culprit beyond the classic 8.